DOC AIRBUS | TSM A320FLoss of the FMGC 1 OWN B Bus
TASK 22-83-00-810-859-A
Loss of the FMGC 1 OWN B Bus
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 22-83-00-710-150-A
Subtask 22-83-00-810-140-A
[Rev.8 from Aug 2018]
2026.04.04 04:25:33 UTC
Loss of the FMGC 1 OWN B Bus
1. Possible Causes
- FMGC-1 [1CA1]
wiring of the FMGC OWN B (COM) bus (from the FMGC 1 (1CA1) to the first terminal block)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 22-83-34-000-001 | Removal of the FMGC |
| AMM 22-83-34-400-001 | Installation of the FMGC |
| ASM 228602 | |
| AMM 22-96-00-710-001 | Operational Test of the AFS |
Subtask 22-83-00-710-150-A
A. Test
(1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FAC 1.
4. Fault Isolation(1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FAC 1.
Subtask 22-83-00-810-140-A
A. If the test gives the maintenance message AFS: FAC1/FMGC1 BUS WIRG:
Subtask 22-83-00-710-151-A - replace the FMGC-1 [1CA1] , AMM 22-83-34-000-001 and AMM 22-83-34-400-001.
- do a check and repair the
wiring of the FMGC OWN B (COM) bus (from the FMGC 1 (1CA1) to the first terminal block) ASM 228602.
B. Do the test given in Para. 3.